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AI Detects Heart Failure from One Heartbeat: Study
11–20 of 74 posts
Re: AI Detects Heart Failure from One Heartbeat: Study
#12last year we've started to cloud recording obstetric ultrasound videos. we add more than 17,000 ultrasound exams to our platform each month. It's probably the largest dataset in the world of obstetric ultrasounds videos (~ 300,000 exams).
reading news like this makes me think about how we can explore our dataset using ML/AI and help produce better diagnosis. I have no idea how (We're not an AI company).
If someone here wants to start a project with AI on top of ultrasounds, I'm all in.
let me know at hn at angra.ltd and I can give more details
Re: AI Detects Heart Failure from One Heartbeat: Study
#13I'm going to sound like a skeptical jerk here, but 490,000 heartbeats is how many patients? From what I recall these public ECG datasets are like 20 patients who underwent longitudinal ECGs. 500k heart beats is like 5 person-days of ECG recordings. Ninja Edit: N=~30 patients. For something like ECGs which are readily available, they really should have tried to get more patients. A single clinic anywhere does than 30…
And also different sources for positive and negative samples.
Yeah, and recorded at different frequencies. Could easily be a downsampling artifact.
Re: AI Detects Heart Failure from One Heartbeat: Study
#14last year we've started to cloud recording obstetric ultrasound videos. we add more than 17,000 ultrasound exams to our platform each month. It's probably the largest dataset in the world of obstetric ultrasounds videos (~ 300,000 exams). reading news like this makes me think about how we can explore our dataset using ML/AI and help produce better diagnosis. I have no idea how (We're not an AI company). If someone he…
I'm not sure that data set will mean anything without human-drawn conclusions about the patient (diagnoses, abormalities, etc.)
Re: AI Detects Heart Failure from One Heartbeat: Study
#15Wasn't a similar claim made about an AI detecting skin cancer from moles? Once the AI was deployed in the real world is failed miserably. I think it was a ton of false-positives because it was trained on images where cancerous moles all had images of rulers with them and the benign ones didn't have rulers in the image. So it just picked up on the ruler as a cancer indicator.
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Re: AI Detects Heart Failure from One Heartbeat: Study
#16I'm going to sound like a skeptical jerk here, but 490,000 heartbeats is how many patients? From what I recall these public ECG datasets are like 20 patients who underwent longitudinal ECGs. 500k heart beats is like 5 person-days of ECG recordings. Ninja Edit: N=~30 patients. For something like ECGs which are readily available, they really should have tried to get more patients. A single clinic anywhere does than 30…
Didn't they mention that they sampled only 5 minutes of heartbeats per patient? That would be n=1633, assuming a heart rate of 60.
Re: AI Detects Heart Failure from One Heartbeat: Study
#17So first clarification is that heart failure != heart attack. Heart failure is a chronic condition where the heart is unable to pump hard enough to keep blood flowing through the body. Typically results in blood pooling in the leg, shortness of breath, etc.
The study avoids the obvious pitfall, which is to put different slices of one patient's data into both training and test. The press also reports the training accuracy (100%) when the test accuracy/sensitivity/precision metrics are all at around 98%.
Another encouraging sign is that when you dig into the 2% error rate, a majority of those errors turned out to be mislabeled data.
The study also acknowledges the following:
"Our study must also be seen in light of its limitations... First the CHF subjects used in this study suffer from severe CHF only...could yield less accurate results for milder CHF."
I think this is a good proof of concept but that the severe CHF and tiny sample size (33 patients) means that we're a long ways away from clinical usage.
Re: AI Detects Heart Failure from One Heartbeat: Study
#18Pff, I can detect heart failure with no heartbeats at all.
Care to explain?
Re: AI Detects Heart Failure from One Heartbeat: Study
#19Re: AI Detects Heart Failure from One Heartbeat: Study
#20This is interesting, but more because it indicates that there's adequate data in a single heartbeat to do such diagnosis. In practical terms it's probably not nearly so relevant because it sounds like they were working with the raw data not tracing. By the time you have a patient hooked up to the proper equipment to do this diagnosis you're going to be getting adequate data anyway.
The main impact might be that if this holds up people could be tested with a short hook up in an office instead of with a 24-hour monitoring where they have to bring back a Holter device the next day. Of course, that 24 hour dataset may have independent value of its own for further diagnostics beyond just whether the patient has CHF.